最重要秘密信息隐藏在中频，能够抵抗正常的JPEG压缩攻击。
The most important secret messages are hidden in intermediate frequency, which can resist normal JPEG compressing attack.
最重要秘密信息隐藏在中频，能够抵抗正常的JPEG压缩攻击。
The most important secret messages are hidden in intermediate frequency, which can resist normal JPEG compressing attack.
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